Celebrities like Justin Bieber and Kevin Hart are signing-on to take part in the All In Challenge — a fundraiser to help feed people affected by the ongoing coronavirus pandemic.

Philadelphia 76'ers co-owner Michael Rubin launched the fundraising auction where athletes, artistes and celebrities offer once-in-a-lifetime experiences to fans. People can donate as little as $10 to earn a chance to win one of the fan experiences being offered by the celebrity of their choice.

Bieber, Hart and Dwyane Wade were among some of the first high-profile names to lend their names and prizes to the effort.

Bieber is offering to fly out to the winner's house for a private show of his song, One less lonely girl, while Hart is giving a chance to be in his next movie.

Since gaining traction on Tuesday, many celebrities are calling out some of their famous friends to get involved.

Other high-profile names taking part in the auction include Meek Mill, Ryan Seacrest, Rob Lowe, Robin Thicke, and Alex Rodriguez.